Datasheet summary
Serie 4\" V4i 21
Engineering summary from PDF text extraction for Serie 4\" V4i 21. Verify every value with the OEM datasheet.
Summary
Product identification
These are Knappe Pressure Vessels from the SERIES 4 inch V4i - FRONT ENTRY, manufactured by Knappe Composites. The product line is also associated with AnyChem Pressure Vessels.
Operating limits
- Max. Working Pressure: 21 bar (300 PSI)
- Max. Working Temperature: 65 °C (150 °F)
- Min. Working Temperature: 2 °C (36 °F)
- Max Test Pressure (ASMEX): 27.3 bar (390 PSI)
Mechanical / Hydraulic
Vessel Types and Dimensions (L-Stich)
| Vessel Type | L-Stich [mm] | L-Stich [inch] | Tol L-Stich [mm] | Tol L-Stich [inch] |
|---|---|---|---|---|
| RO4Z1M14-V4i-21 | 433 | 17.05 | -3/+5 | -0.12/+0.2 |
| RO4Z1M21-V4i-21 | 611 | 24.06 | -3/+5 | -0.12/+0.2 |
| RO4Z1M40-V4i-21 | 1093 | 43.03 | -3/+5 | -0.12/+0.2 |
| RO4Z2M40-V4i-21 | 2110 | 83.07 | -3/+5 | -0.12/+0.2 |
| RO4Z3M40-V4i-21 | 3127 | 123.11 | -3/+6 | -0.12/+0.236 |
| RO4Z4M40-V4i-21 | 4144 | 163.15 | -3/+6 | -0.12/+0.236 |
| RO4Z5M40-V4i-21 | 5161 | 203.19 | -3/+6 | -0.12/+0.236 |
| RO4Z6M40-V4i-21 | 6178 | 243.23 | -3/+6 | -0.12/+0.236 |
Components and Materials
- SHELL: FRP
- LINER: PVC
- GROOVERING: Alu
- ENDPLATE open (Part # 74EP4): PPE
- ENDPLATE closed (Part # 74PEP4-C): PPE
- ELEMENT ADAPTER closed (Part # 74AD192-C): PPE
- RETAINING RING (Part # 64SEC4): 316TI
- SCREW M6 (Part # 58SCR6x12): 316TI
- O-RING (Part # OR92x5): EPDM
- MOUNT (optional) (Part # 64MOUNT): PE
Ports
- HP-PORT (optional)
- PERMEATE PORT (optional)
- BRINE optional port
- FEED optional port
- The optional Feed/Brine ports can be used up to 21 bar (300 PSI) with SS inserts.
- PVC inserts are available.
- Ports are available in different styles including G3/4in cylindrical, G1/2in cylindrical, and DN16/PN16.
- Important Note: Do not use tapered Fittings for HP and Permeate ports in the endplate.
Mounting Recommendations
- 1 to 3 elements = 2 Mounts
- 4 to 6 elements = 3 Mounts
- Mounts are options and not included in vessel supply.
Material Suitability All wetted surfaces are suitable for potable water.
Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions. Contractual data must match the OEM PDF revision used on the project.
Official datasheet (PDF)
Curated from selected public technical reference material for discovery and preliminary comparison. This summary is not a substitute for a current certified manufacturer datasheet. Verify revisions and design limits before use.